XMLPort Export

Hi,

I want to export some items from datatable and i have followed this guide which is super nice.

How can i modify the xml tag so instead of the following 

<Root>
<SaleHeader>
<No.>1002</No.>
<Name>Foooffice ApS</Name>
<Address>Foolandsvej</Address>
<City>Svendborg</City>

I can put the xml tag as followed:

<val n="name">Foooffice ApS</val>
<val n="address1">Foolandsvej</val>
<val n="city">Svendborg</val>